Had before this already by some power banks, but even higher-priced with outputs over 2 amps could My Pro tablet (Samsung) not reasonable load (stopped or took an unusually long time). But the RAVPower 15000mAh is fantastic. Each of my tablets and mobile phones so that loads at maximum speed. Moreover, I am completely satisfied. The only thing I regret is that I have not bought it a long time ago. I would have saved me a lot.